Move Dockerfile to root for HF Spaces

Dockerfile

@@ -0,0 +1,30 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y --no-install-recommends git && rm -rf /var/lib/apt/lists/*
+
+RUN git clone https://github.com/meta-pytorch/OpenEnv.git /app/OpenEnv
+
+RUN pip install --no-cache-dir \
+        fastapi \
+        "uvicorn[standard]" \
+        pydantic \
+        openai \
+        requests \
+        openenv-core && \
+    pip install --no-cache-dir -e /app/OpenEnv || true
+
+COPY . .
+
+ENV PYTHONPATH="/app:/app/OpenEnv:/app/OpenEnv/src"
+
+RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
+USER appuser
+
+HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
+    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/health')"
+
+EXPOSE 7860
+
+CMD ["uvicorn", "server.app:app", "--host", "0.0.0.0", "--port", "7860"]